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A-type asteroid : ウィキペディア英語版 | A-type asteroid A-type asteroids are relatively uncommon inner-belt asteroids that have a strong, broad 1 µm olivine feature and a very reddish spectrum shortwards of 0.7 µm. They are thought to come from the completely differentiated mantle of an asteroid. A-type asteroids are so rare that as of 2015 only 17 had been discovered.〔(【引用サイトリンク】publisher=JPL Solar System Dynamics )〕 == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「A-type asteroid」の詳細全文を読む
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